Cloth-cutting machine.



M. SIEGBL.

CLOTH CUTTING MACHINE.

APPLxoATIoN HLED JUNE 13, 191s.

1,1 1 6,335. Patented Nov. 3, 1914M 3/ 2 SHEETS-SHEET 1 wneooeo W Cl 3M i @W1 my M. SIEGEL.

CLOTH GUTTING MACHINE.

APPLICATION FILED JUNI: 1a, 1913.

Patented Nov. 3, 1914.

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MYER SIEGEL, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, OF ONLEIa HALFTO SIGMUND SALOMON, OIE NEW YORK, N. Y.

cLoTH-cirr'rnve MACHINE.

To all whom t may concern:

Be it known that I, MYER Simoni., a citizen of the United States, residing at New York city, in` the `county of New York and State of New York, have invented new and useful Improvements in Cloth-Cutting Machines, of which the following is a specification. i i

The general object of the invention is to improve the construction of cloth cutting machines in point of adapting these devices to operate on relatively soft orfhard material. And to this end the invention resides in providing means forV varying the throw or length of stroke of the cutting knife.

Other objects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had to the accompanying drawings forming part hereof in which Figure 1 is a side elevation of the device partly in section. Fig. 2 is a detail plan on the line 2-2 of Fig. 1 with the side walls of the casing omitted. Fig. 3 is a section looking at right angles to Fig. 2 and taken on the line 8 3 of Fig. 1. Fig. 4l is a detail vertical section of the head.

The head 5 is a casting and is formed with a web 6. This web 6 has a horizontal slot 7 which receives a fulcrum member 8 upon which is fulcrumed the rock arm 9, this said rock arm having a slot 10 which receives the fulcrum member 8. The presence of the slots 7 and 10 permits of varying the position of the fulcrum member 8 whereby, a variation in the length of angular movement of the free end of the rock arm 9 may be had. The rock arm is operatively connected to a motor, the casing of which is indicated by 11. The connection herein shown consists of the cross head 12 mounted in guides 13-13 formed with the head 5, a link 14 connected at one end to the cross head and a crank 15 carried by the armature shaft of the motor and connected to the other end of the link 14.

The drive rod 16 is slidingly fitted in guides 17-17 formed in the head 5, said drive rod being splined in the lower guide as indicated at 18, whereby t0 prevent turning movement of the drive rod. The upper portion of the drive rod has trunnions 19-19 which are taken by a horizontal re- Specication of Letters Patent.

Application lcd .Tune 13, 1913.

Patented N ov. 3, 1914. Serial No. 773,505.

cess 2() in the rock arm 9 said rock arm also having a vertical recess 21, to take the drive rod 16. The lower portion 22 of the drive rod is offset inwardly, whereby, to have the knife 23 which is detachably` connected to the lower end of the drive rod, operate as usual. in the knife guides formed in the standard 2i, which standard as usual is situated at the center' of gravity of the cutter and extends upwardly from the ordinary base or foot plate 25. The base 2G of the motor casing is mounted on `a lateral extension 27 at the upperend of the standard 24, and this base portion carries the motor switch 28 and the handle 29 for guiding and propelling the machine while in use.

The head 5 and the mechanism supported thereby are arranged in a casing a. This casing is connected to the motor casing as indicated at 30 and also to the head as indicated at 231-31, the said head being connected 'to the motor casing as indicated at 32. The lower portion 33 of the casinga is recessed to receive the knife 23 and is adapted for carrying a presser foot 34 which is adjusted by the usual rack and pinion construction, a portion of which is shown and indicated by 35.

From the foregoing the operation of the machine will be largely understood it being obvious that the turning movement of the armature shaft of the motor being transmitted to the knife through the connections hereinbefore described, these connections also serving to convert the turning movement of the armature shaft into reciprocating movement at the knife.

The type of machine just described is, as hereinbefore stated, adapted for operating with equal facility on either relatively stiff or soft material. Heretofore, so far as known, reciprocating cutting machines have been so constructed as not to admit of varying the length of the knife stroke, consequently in operating with the machine on a relatively few layers of material care had to be taken to have the machine progress relatively slow over the outline to be cut in order to effect a continuous cut, otherwise, that is to say, if the machine were moved relatively rapid after the knife raised from the material and for a distance greater than the width of the knife, the knife upon descending into the material would enter a point equal to the distance the machine moved after the knife left the material, consequently an interrupted cut would be had. `Witli the present construction, however, it is manifest that under the above conditions the length of the stroke may be decreased by shifting the position of the fulcrum member 8 and adjusting the knife downwardly on the drive rod 22 securing it in its adjusted position by the set screw 36. By this construction silk or other soft Inaterial may be cut with the same facility as cotton or relatively hard material. Heretofore, when roperating on soft material, the reciprocating cutter was found to be practically valueless owing to the tendency of the material to follow or move upwardly with the knife when the same ascended for a con- Sider-able distance above the material.

What is claimed as new is:

y l. In a machine of the character described,ca frame, a knife mounted for reciprocation thereon, a rod connected to the knife and guided in the frame, a motor operatively connecting the lever with the motor. p

2. In a machine of the character described, a frame, aknife mounted for reciprocation thereon, a rod connected to the knife and guided in the frame, a motor mounted upon the frame, said frame having a slot, a fulcrum member adjustably mounted in the slot, a lever having a slot which receives said fulcrum member and operatively connected with the rod and means operatively comiecting the lever with the motor.

In testimony whereof I aiiiX my signature in presence of two Witnesses.

,MYER SIEGEL.

l/Vitnesses JOHN A. DONELLY, C. JAMES CRONIN.

Copies of this patent may be obtained for five cent's each, by adressing the Commissioner of Patents,

Washington, D. G, v 

